From 278b40b766f5a4cddb2af711b90169b11d7f15f9 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Wed, 1 May 2019 12:19:14 -0600
Subject: [PATCH] include/graphics/nxwidgets/cwidgetcontrol.hxx:  Add handshare
 to getWindowHandle() to avoid returning a NULL handle.  But now Twm4Nx hangs
 waiting for the non-NULL handle,

---
 include/graphics/nxwidgets/cwidgetcontrol.hxx | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/graphics/nxwidgets/cwidgetcontrol.hxx b/include/graphics/nxwidgets/cwidgetcontrol.hxx
index 7b970f28e..a4c9e2894 100644
--- a/include/graphics/nxwidgets/cwidgetcontrol.hxx
+++ b/include/graphics/nxwidgets/cwidgetcontrol.hxx
@@ -667,6 +667,15 @@ namespace NXWidgets
 
     inline NXHANDLE getWindowHandle(void)
     {
+      // Verify that we have the window handle
+
+      if (m_hWindow == (NXHANDLE)0)
+        {
+          // The window handle is saved at the same time as the bounds
+
+          waitBoundsData();
+        }
+
       return m_hWindow;
     }